The Mechanism of Phase Formation and Peculiarities of Mechanochemical Synthesis of Chromium Carbide
https://doi.org/10.17073/1997-308X-2014-3-8-15
Abstract
There was investigated influence of mechanical activation in centrifugal planetary mill (during 9–43 min at relation of balls mass and material B : M = 20 : 1) and subsequent high-speed heating (~ 6 °C/s) on phase formation in the system of chromium–carbon. There was elucidated that incu- bation period of carbide forming during mechanosynthesis process correlated well with thinning of interlayer of chromium in rolls like particles until length of chromium’s diffusion path into carbon. There was demonstrated that not occurred any sufficient (> 1 kJ/mol) internal energy storage in the lattice of crystalline chromium and free surface of soot. There was confirmed diffusion character of carbide forming in the system of chromium – soot as in mechanosynthesis process, both at subsequent flash heating.
About the Authors
O. N. PripisnovRussian Federation
E. V. Shelekhov
Russian Federation
S. I. Rupasov
Russian Federation
A. S. Medvedev
Russian Federation
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Review
For citations:
Pripisnov O.N., Shelekhov E.V., Rupasov S.I., Medvedev A.S. The Mechanism of Phase Formation and Peculiarities of Mechanochemical Synthesis of Chromium Carbide. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2014;(3):8-15. (In Russ.) https://doi.org/10.17073/1997-308X-2014-3-8-15